Content Comparison

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All of these hard drives are accessible from the ICC once the volumes have been mounted as part of the IGRINS Startup Procedure.

During a trimester, files are to be copied from the ICC to the DSC in order to make a duplicate of each file. In This is in addition to the copy saved by each observer, this ensures ensuring at least three copies.

At the start of a trimester all files from the previous trimester will be archived.  This is accomplished by:

1. Copy ICC files to DSC, UT external HD, and KASI external HD. 
   1. Each system is setup with a storage tree that identifies the initial hard drive and the trimester of the files. (HD>DCCS_4> 2014T2>files sorted by local date of observation)
   2. To copy the files while maintaining the files dates and copying every subdirectory
      1. cd to the target directory        cd /Volumes/HD/2014T2
         
      2. use this format.          cp -apv /IGRINS/obsdata/201409* .
   3. To copy to the DSC you need to first make OBSDATA on the DCS DSC>OBSDATA a shared drive, and then complete the steps above.
2. Copy DCC files to external hard drive.
   1. cd to the target directory        cd /Volumes/HD/2014T2
   2. use this format.          cp -apv /IGRINS/obsdata/201409* .
      
   3. or drag and drop.

In order to avoid filling hard drives they must be cleaned after the copies have been made. 

The DCC appear appears to save every fowler read as a separate file, producing 32 1632x16.8MB files for each nod position. For a 12 hour night this is roughly 25GB of storage, and for a 60 night trimester this is 1.5TB of data on a 1TB HD.

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